\begin{abstract}
The foreground extraction is a technique who aim to detect changes in an image sequences. Theses changes are name the foreground because in many computer vision application, only the moving object should be analysed. The scope of foreground detection is wide~: video surveillance, smart phones, user-gesture control, industrial processes, auto-mobile, authentication, medical, robotics, etc. Following document describe a basic implementation of such a technique. There many more techniques performing better, therefore, this project was lead \emph{for educational purpose only}.
\end{abstract}